1. The solid state of the water molecule or rather the crystalline form of water molecule.

2. The arrangement of atoms in ice molecule is dependent upon the temperature at which the water crystallizes into ice. The structure of ice hexagonal form if water crystallizes at normal pressure and the structure of ice is cubic in nature if water crystallizes at very low temperatures.

3. The three-dimensional structure of ice is represented as:

4. The structure is highly ordered and has hydrogen bonding. Each oxygen atom is surrounded tetrahedral by four other oxygen atoms at a distance of 276 pm. The structure also contains wide holes that can hold molecules of appropriate sizes interstitially.